Carbon-paper



H. OHASHIl DECD.

M. v.oHAsH|.ADM1N\sTRATmx.

CARBON PAPER.

APPLICATION FILED JULY 3. |1911.

1,332,141. Patented Feb. 24,1920.

INVENTOR UNITED STATES PATENT OFFICE.

HYDESABURO OH'ASHI, 0F NEW YORK, N. Y.; MARIE V. OHASHI ADMINISTRATRIX 0F SAID' HYDESABURO OHASHI, DECEASED.

CARBON-PAPER.

Speoipcation of Letters Patent.

Patented Feb. 24, 1920.

Application led July 3, 1917. Serial No. 178,399.

To all whom t may concern:

Be it known that I, HYDESABURO Onfism, a subject of the Emperor of Japan, residm at New York, in the county'of New Yor and State of New York, have invented new and useful Improvements in Carbon-Paper, of which the following is a specification.

This invention relates to carbon papergor the like. v f

yOrdinaril carbon paper consists of a perfectly at sheet of paper on which the ink coating or preparation is applied, and. 1n practice, it is only possible to apply a limited amount of said coating or ink preparation to said paper and as a consequence thereof, the life of the carbonized .paper 1s decidedly limited.v

In carrying the invention into practice the paper for carbonization purpose is craped, creased or crumpled in any suitable well known manner which may be best adapted to the purpose. This process of craping, creasing or crumpling in the first place forms closely arranged minute channels or depressions onv the face of the aper while in the second place it serves to reak the texture or fabric of the paper. The channels or depressions thus made on the face of the paper permit a greater amount of carbon ink preparation to firmly adhere to the paper, while the breaking of the texture as above referred to, operates to i'ncrease the absorbing qualities of the paper which will permit of an application of a greater quantity of ink preparation to the paper.

The more prominent the craping, creasing or crumpling lof the paper, the greater its capacit to retain the ink but the less clear will t e writing appear, and vice versa, while the less rominent the craping, creasing or Crump ing, lthe less the'- adhering power lof the ink on .the paper and the clearer the impressions of the writing.

With the above in view, a greater degree of the. prominence of the craping, creasing or crumpling of the paper may be applied to a class of carbon paper manufactured forthe purpose of manifolding `a less number of copies at one time, while a less prominent degree of the craping, creasing or crumplingy may be applied to those manufactured for the purpose of manifolding a higher number ofcopies at one time. The desired de ee of craping, creasing for crumpling of tglie paper may be accomplished by any suitable well known means wherein channels or depressions of any predetermined sizes can be properly produced in a single operation and the texture of the paper broken to suit given requirements. It can also be accompllshed by rst 'craping, creasing or crumpling the paper more prominently than what may be finally desired and then afterward subjected to the action of a suitable well known smoothing apparatus which will operate to lessen the rominence of the mentioned channels w ereby the paper can be prepared to adapt itself to any given volume of ink preparation. y

AS the principal feature of my invention resides in breaking the texture of the paper and forming cavities therein for the purpose set forth either singly or collectively, I do not desire to limit myself to the precise manner of accomplishing such result, as many changes may be made therein within the scope of the appended claim.

I further do not wish to limit myself to the roduction or formation of any particular form of cavities nor the manner in which said'cavities are produced. .As long as some unevenness is produced in the paper or indentations or the equivalent of cavities, the object of the invention will be fulfilled.

Then, again, the mere embossing of the by breaking the texture as the result ofthe What is claimed as new is described craping, creasing or crumpling, As a new article ofA manufacture, a mani- 10 channels or cavities are produced in which fold sheet embodying a sheet of paper havan ink coatin or preparation takes firm ing a substantially craped formation, and a hold against t e paper which enables Ine to thln layer of carbon ink preparation coverplace a relatively heavy mass of ink prepaing one side or surface of the paper.

ration upon the paper as described else- In testimony whereof I affix my signature. 15 where herein. HYDESABURO OHASHI. 

